<template>
    <div class="tabs flex-row oh">
        <template v-for="(item, index) in form.tabs_list" :key="index">
            <div class="item nowrap flex-col jc-c gap-4" :class="tabs_theme + (index == 0 ? ' active' : '')">
                <template v-if="!isEmpty(item.img)">
                    <image-empty v-model="item.img[0]" class="img" error-img-style="width:2rem;height:2rem;"></image-empty>
                </template>
                <template v-else>
                    <image-empty class="img" error-img-style="width:2rem;height:2rem;"></image-empty>
                </template>
                <div class="title" :style="title_style(index)">{{ item.title }}</div>
                <div class="desc" :style="tabs_theme_index == '1' && index == 0 ? tabs_check : ''">{{ item.desc }}</div>
                <icon name="checked-1" class="icon" :style="tabs_theme_index == '3' ? icon_tabs_check() : ''"></icon>
                <div class="bottom_line" :style="tabs_check"></div>
            </div>
        </template>
    </div>
</template>

<script lang="ts" setup>
import { gradient_computer } from '@/utils';
import { isEmpty } from 'lodash';
const props = defineProps({
    value: {
        type: Object,
        default: () => ({}),
    },
});
// const tabs = ref(props.value);
// 用于页面判断显示
const state = reactive({
    form: props.value.content,
    new_style: props.value.style,
});
// 如果需要解构，确保使用toRefs
const { form, new_style } = toRefs(state);

// 选中的值
const tabs_theme_index = computed(() => form.value.tabs_theme);
//选中的样式
const tabs_theme = computed(() => {
    let tabs_theme = '';
    if (form.value.tabs_theme == '1') {
        tabs_theme = 'tabs-style-2';
    } else if (form.value.tabs_theme == '2') {
        tabs_theme = 'tabs-style-3';
    } else if (form.value.tabs_theme == '3') {
        tabs_theme = 'tabs-style-4';
    } else if (form.value.tabs_theme == '4') {
        tabs_theme = 'tabs-style-5';
    } else {
        tabs_theme = 'tabs-style-1';
    }
    return tabs_theme;
});
// 选中的背景渐变色样式
const tabs_check = computed(() => {
    const new_gradient_params = {
        color_list: new_style.value.tabs_checked,
        direction: new_style.value.tabs_direction,
    };
    return gradient_computer(new_gradient_params);
});

// 选中的内部样式
const tabs_theme_style = computed(() => {
    return {
        tabs_title_checked: `font-weight: ${ new_style.value.tabs_weight_checked };font-size: ${ new_style.value.tabs_size_checked}px;color:${ new_style.value.tabs_color_checked };`,
        tabs_title: `font-weight: ${ new_style.value.tabs_weight };font-size: ${ new_style.value.tabs_size}px;color:${ new_style.value.tabs_color };`,
    };
});

const title_style = (index: number) => {
    // 默认是未选中的状态
    let style = `${ tabs_theme_style.value.tabs_title }`;
    if (index == 0) {
        let checked_style = tabs_theme_style.value.tabs_title_checked;
        if (['2', '4'].includes(tabs_theme_index.value)) {
            checked_style += tabs_check.value;
        }
        style = checked_style;
    }
    return style;
};
// icon的渐变色处理
const icon_tabs_check = () => {
    return `${ tabs_check.value };line-height: 1;background-clip: text;-webkit-background-clip: text;-webkit-text-fill-color: transparent;`;
}
</script>
<style lang="scss" scoped>
.tabs {
    max-width: 39rem;
    .item {
        padding: 0 0 0.5rem 0;
        margin: 0 1rem;
        position: relative;
        &:first-of-type {
            margin-left: 0;
        }
        &:last-of-type {
            margin-right: 0;
        }
        .title {
            font-size: 1.4rem;
            text-align: center;
        }
        .desc {
            font-size: 1.1rem;
            color: #999;
            text-align: center;
            display: none;
        }
        .bottom_line {
            width: 100%;
            height: 0.3rem;
            border-radius: 1rem;
            background-color: red;
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            display: none;
        }
        .icon {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            text-align: center;
            font-size: 2rem;
            display: none;
        }
        .img {
            width: 3.9rem;
            height: 3.9rem;
            border-radius: 100%;
            border: 0.1rem solid transparent;
            display: none;
        }
        &.tabs-style-1 {
            &.active {
                .bottom_line {
                    display: block;
                }
            }
        }
        &.tabs-style-2 {
            &.active {
                .desc {
                    background: #FF5E5E;
                    color: #fff;
                }
            }
            .desc {
                border-radius: 2rem;
                padding: 0.2rem 0.6rem;
                display: inline-block;
            }
        }
        &.tabs-style-3 {
            &.active {
                .title {
                    background: #FF2222;
                    border-radius: 2rem;
                    padding: 0.2rem 1.2rem;
                    color: #fff;
                }
            }
        }
        &.tabs-style-4 {
            padding-bottom: 1.8rem;
            &.active {
                .title {
                    color: #FF2222;
                }
                .icon {
                    color: #FF2222;
                    display: block;
                }
            }
        }
        &.tabs-style-5 {
            align-items: center;
            &.active {
                .title {
                    font-size: 1.1rem;
                    background: #FF5E5E;
                    border-radius: 2rem;
                    padding: 0.2rem 0.7rem;
                    color: #fff;
                }
                .img {
                    border-color: #FF5E5E;
                }
            }
            .img {
                display: block;
            }
        }
    }
}
</style>
